about summary refs log tree commit diff
path: root/absl/copts.bzl
blob: 68aafd5c5011af348655a4d77af286de7198be7e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
"""absl specific copts.

Flags specified here must not impact ABI. Code compiled with and without these
opts will be linked together, and in some cases headers compiled with and
without these options will be part of the same program.
"""
GCC_FLAGS = [
    "-Wall",
    "-Wextra",
    "-Wcast-qual",
    "-Wconversion-null",
    "-Wmissing-declarations",
    "-Woverlength-strings",
    "-Wpointer-arith",
    "-Wunused-local-typedefs",
    "-Wunused-result",
    "-Wvarargs",
    "-Wvla",  # variable-length array
    "-Wwrite-strings",
]

GCC_TEST_FLAGS = [
    "-Wno-conversion-null",
    "-Wno-missing-declarations",
    "-Wno-sign-compare",
    "-Wno-unused-function",
    "-Wno-unused-parameter",
    "-Wno-unused-private-field",
]

LLVM_FLAGS = [
    "-Wall",
    "-Wextra",
    "-Weverything",
    "-Wno-c++98-compat-pedantic",
    "-Wno-comma",
    "-Wno-conversion",
    "-Wno-disabled-macro-expansion",
    "-Wno-documentation",
    "-Wno-documentation-unknown-command",
    "-Wno-double-promotion",
    "-Wno-exit-time-destructors",
    "-Wno-extra-semi",
    "-Wno-float-conversion",
    "-Wno-float-equal",
    "-Wno-format-nonliteral",
    "-Wno-gcc-compat",
    "-Wno-global-constructors",
    "-Wno-google3-inheriting-constructor",
    "-Wno-google3-lambda-expression",
    "-Wno-google3-rvalue-reference",
    "-Wno-google3-trailing-return-type",
    "-Wno-nested-anon-types",
    "-Wno-non-modular-include-in-module",
    "-Wno-old-style-cast",
    "-Wno-packed",
    "-Wno-padded",
    "-Wno-range-loop-analysis",
    "-Wno-reserved-id-macro",
    "-Wno-shorten-64-to-32",
    "-Wno-sign-conversion",
    "-Wno-switch-enum",
    "-Wno-thread-safety-negative",
    "-Wno-undef",
    "-Wno-unused-macros",
    "-Wno-weak-vtables",
    # flags below are also controled by -Wconversion which is disabled
    "-Wbitfield-enum-conversion",
    "-Wbool-conversion",
    "-Wconstant-conversion",
    "-Wenum-conversion",
    "-Wint-conversion",
    "-Wliteral-conversion",
    "-Wnon-literal-null-conversion",
    "-Wnull-conversion",
    "-Wobjc-literal-conversion",
    "-Wstring-conversion",
]

LLVM_TEST_FLAGS = [
    "-Wno-c99-extensions",
    "-Wno-missing-noreturn",
    "-Wno-missing-prototypes",
    "-Wno-null-conversion",
    "-Wno-shadow",
    "-Wno-shift-sign-overflow",
    "-Wno-sign-compare",
    "-Wno-unused-function",
    "-Wno-unused-member-function",
    "-Wno-unused-parameter",
    "-Wno-unused-private-field",
    "-Wno-unused-template",
    "-Wno-used-but-marked-unused",
    "-Wno-zero-as-null-pointer-constant",
]

MSVC_FLAGS = [
    "/W3",
    "/WX",
    "/wd4005",  # macro-redifinition
    "/wd4068",  # unknown pragma
    "/wd4244",  # conversion from 'type1' to 'type2', possible loss of data
    "/wd4267",  # conversion from 'size_t' to 'type', possible loss of data
    "/wd4800",  # forcing value to bool 'true' or 'false' (performance warning)
    "/DWIN32_LEAN_AND_MEAN",  # Don't bloat namespace with incompatible winsock versions.
]

MSVC_TEST_FLAGS = [
    "/wd4018",  # signed/unsigned mismatch
    "/wd4101",  # unreferenced local variable
    "/wd4503",  # decorated name length exceeded, name was truncated
]

def _qualify_flags(scope, flags):
  return [scope + x for x in flags]

HYBRID_FLAGS = _qualify_flags("-Xgcc-only=", GCC_FLAGS) + _qualify_flags("-Xclang-only=", LLVM_FLAGS)
HYBRID_TEST_FLAGS = _qualify_flags("-Xgcc-only=", GCC_TEST_FLAGS) + _qualify_flags("-Xclang-only=", LLVM_TEST_FLAGS)

# /Wall with msvc includes unhelpful warnings such as C4711, C4710, ...
ABSL_DEFAULT_COPTS = select({
    "//absl:windows": MSVC_FLAGS,
    "//absl:llvm_warnings": LLVM_FLAGS,
    "//conditions:default": GCC_FLAGS,
})

# in absence of modules (--compiler=gcc or -c opt), cc_tests leak their copts
# to their (included header) dependencies and fail to build outside absl
ABSL_TEST_COPTS = ABSL_DEFAULT_COPTS + select({
    "//absl:windows": MSVC_TEST_FLAGS,
    "//absl:llvm_warnings": LLVM_TEST_FLAGS,
    "//conditions:default": GCC_TEST_FLAGS,
})

ABSL_EXCEPTIONS_FLAG = select({
    "//absl:windows": ["/U_HAS_EXCEPTIONS", "/D_HAS_EXCEPTIONS=1", "/EHsc"],
    "//conditions:default": ["-fexceptions"],
})